.......but I would think that a bad diode would not allow the h/light motor to work at all, not just slower than the other one.
Hi
I was wondering that due to the very bad soldered/corroded joint that maybe the motor was not getting the full 12 volts and maybe was slower. I didnt measure volts to confirm but once i do the right side (which is now the slower one) I will see if they come up at the same speed. I agree with bob.. diodes conduct or they dont but perhaps supply voltages cause this